Infiniti Q45 MPG by Year & Engine (EPA)
EPA fuel-economy ratings for every rated Infiniti Q45 model year from 1990 to 2006 — each engine and transmission with its official city, highway and combined figures. Over these years the Q45 has been offered with 4.5L 8-cyl, 4.1L 8-cyl engines; the most efficient version is the 2006 (up to 18 MPG combined). Every rated gas version calls for premium gasoline. Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.
Infiniti Q45 fuel economy by year
| Year | Combined | Engines | Median used price | For sale |
|---|---|---|---|---|
| 2006 | 18 MPG | 4.5L 8-cyl | — | — |
| 2005 | 18 MPG | 4.5L 8-cyl | — | — |
| 2004 | 18 MPG | 4.5L 8-cyl | — | — |
| 2003 | 18 MPG | 4.5L 8-cyl | — | — |
| 2002 | 18 MPG | 4.5L 8-cyl | — | — |
| 2001 | 18 MPG | 4.1L 8-cyl | — | — |
| 2000 | 18 MPG | 4.1L 8-cyl | — | — |
| 1999 | 18 MPG | 4.1L 8-cyl | — | — |
| 1998 | 18 MPG | 4.1L 8-cyl | — | — |
| 1997 | 18 MPG | 4.1L 8-cyl | — | — |
| 1996 | 17 MPG | 4.5L 8-cyl | — | — |
| 1995 | 16–17 MPG | 4.5L 8-cyl | — | — |
| 1994 | 16–17 MPG | 4.5L 8-cyl | — | — |
| 1993 | 15–17 MPG | 4.5L 8-cyl | — | — |
| 1992 | 15–17 MPG | 4.5L 8-cyl | — | — |
| 1991 | 15–17 MPG | 4.5L 8-cyl | — | — |
| 1990 | 17 MPG | 4.5L 8-cyl | — | — |
2006 Infiniti Q45: engines & MPG
The 2006 Q45 was EPA-rated in 2 versions (4.5L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 Sport | 4.5L 8-cyl | Automatic (S5) | Premium | 15 | 22 | 18 MPG |
| Q45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 22 | 18 MPG |
2005 Infiniti Q45: engines & MPG
The 2005 Q45 was EPA-rated in 1 version (4.5L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 22 | 18 MPG |
2004 Infiniti Q45: engines & MPG
The 2004 Q45 was EPA-rated in 1 version (4.5L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 22 | 18 MPG |
2003 Infiniti Q45: engines & MPG
The 2003 Q45 was EPA-rated in 1 version (4.5L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 22 | 18 MPG |
2002 Infiniti Q45: engines & MPG
The 2002 Q45 was EPA-rated in 1 version (4.5L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic (S5) | Premium | 16 | 23 | 18 MPG |
2001 Infiniti Q45: engines & MPG
The 2001 Q45 was EPA-rated in 1 version (4.1L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.1L 8-cyl | Automatic 4-spd | Premium | 16 | 21 | 18 MPG |
2000 Infiniti Q45: engines & MPG
The 2000 Q45 was EPA-rated in 1 version (4.1L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.1L 8-cyl | Automatic 4-spd | Premium | 16 | 21 | 18 MPG |
1999 Infiniti Q45: engines & MPG
The 1999 Q45 was EPA-rated in 1 version (4.1L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.1L 8-cyl | Automatic 4-spd | Premium | 16 | 22 | 18 MPG |
1998 Infiniti Q45: engines & MPG
The 1998 Q45 was EPA-rated in 1 version (4.1L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.1L 8-cyl | Automatic 4-spd | Premium | 16 | 22 | 18 MPG |
1997 Infiniti Q45: engines & MPG
The 1997 Q45 was EPA-rated in 1 version (4.1L 8-cyl), with combined economy of 18 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.1L 8-cyl | Automatic 4-spd | Premium | 16 | 22 | 18 MPG |
1996 Infiniti Q45: engines & MPG
The 1996 Q45 was EPA-rated in 1 version (4.5L 8-cyl), with combined economy of 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic 4-spd | Premium | 15 | 20 | 17 MPG |
1995 Infiniti Q45: engines & MPG
The 1995 Q45 was EPA-rated in 2 versions (4.5L 8-cyl), with combined economy from 16 to 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic 4-spd | Premium | 15 | 20 | 17 MPG |
| Q45 Full-Active Suspension | 4.5L 8-cyl | Automatic 4-spd | Premium | 14 | 19 | 16 MPG |
1994 Infiniti Q45: engines & MPG
The 1994 Q45 was EPA-rated in 2 versions (4.5L 8-cyl), with combined economy from 16 to 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic 4-spd | Premium | 15 | 20 | 17 MPG |
| Q45 Full-Active Suspension | 4.5L 8-cyl | Automatic 4-spd | Premium | 14 | 19 | 16 MPG |
1993 Infiniti Q45: engines & MPG
The 1993 Q45 was EPA-rated in 2 versions (4.5L 8-cyl), with combined economy from 15 to 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic 4-spd | Premium | 15 | 20 | 17 MPG |
| Q45 Full-Active Suspension | 4.5L 8-cyl | Automatic 4-spd | Premium | 14 | 18 | 15 MPG |
1992 Infiniti Q45: engines & MPG
The 1992 Q45 was EPA-rated in 2 versions (4.5L 8-cyl), with combined economy from 15 to 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic 4-spd | Premium | 15 | 20 | 17 MPG |
| Q45 Full-Active Suspension | 4.5L 8-cyl | Automatic 4-spd | Premium | 13 | 17 | 15 MPG |
1991 Infiniti Q45: engines & MPG
The 1991 Q45 was EPA-rated in 2 versions (4.5L 8-cyl), with combined economy from 15 to 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic 4-spd | Premium | 15 | 20 | 17 MPG |
| Q45 Full-Active Suspension | 4.5L 8-cyl | Automatic 4-spd | Premium | 13 | 17 | 15 MPG |
1990 Infiniti Q45: engines & MPG
The 1990 Q45 was EPA-rated in 1 version (4.5L 8-cyl), with combined economy of 17 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic 4-spd | Premium | 15 | 20 | 17 MPG |
Frequently asked questions
What MPG does an Infiniti Q45 get?
Depending on year and engine, EPA combined ratings for the Q45 range from 17 to 18 MPG. The most efficient rated version is the 2006 model year.
What engines does the 2006 Infiniti Q45 have?
The 2006 Q45 was EPA-rated with 4.5L 8-cyl engines — see the 2006 table above for each version's exact city/highway figures.
Does the Infiniti Q45 require premium gas?
Yes — every EPA-rated gas Q45 version specifies premium gasoline.
https://vehisales.com/research/fuel-economy/infiniti/q45.
See also: Infiniti Q45 hub — live listings, prices & reliability · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].